Optical bleaching agents for high-quality jet printing
FIELD: printing industry.
SUBSTANCE: invention relates to an optical bleaching agent comprising of a mixture of compounds of the formulas
wherein R is hydrogen or methyl; Y is an amino acid that is derived from aspartic acid, glutamic acid or iminodiacetic acid and from which the hydrogen atom of the amino group is removed; and M is an alkali metal cation. The invention also relates to an optical bleaching agent comprising a compound of formula (4), to a process for preparing an optical bleaching agent, to a compound of formula (4), to a composition for bleaching paper surface, and to paper optically bleached with an optical bleaching agent.
EFFECT: new optical bleaching agents are obtained, providing a bleaching effect when applied to the paper surface.
14 cl, 1 tbl, 9 ex
SUBSTANCE: invention relates to concentrated aqueous compositions of fluorescent bleaching agents for optical bleaching of paper. The aqueous composition comprises (a) between 5 and 80 wt % disulphonic fluorescent bleaching agent derivative of bis(triazinilamino)-stilbene, containing a carboxylic group -CO2M in aniline rings, where M represents hydrogen, Li, Na, K, Ca, Mg, ammonium or ammonium which is mono-, di-, tri- or tetra-substituted by C1-C4- alkyl or C2-C4-hydroxyalkyl, and (b) between 95 to 20 wt % water. A paper bleaching method and produced paper are also described.
EFFECT: offered composition provides high whitening performance and enables stable concentrated aqueous preparations or solutions to be formed, without the addition of solubilising auxiliaries.
25 cl, 2 dwg, 1 tbl, 2 ex
SUBSTANCE: invention relates to disulphonic fluorescent bleaching agents for a coating composition for obtaining a coated paper. Described is the application of the disulphonic fluorescent bleaching agent derivative of bis-triazinylaminostilbenes, containing in aniline rings the group -COOM in a para- and/or ortho-position to an aminogroup, where M is hydrogen, Li, Na, K, Ca, Mg, ammonium or ammonium, which is mono-, di-, tri- or tetrasubstituted with C1-C4-alkyl or C2-C4-hydroxyalkyl, for the clarification of the coating compositions. The coating composition includes a white pigment, a synthetic binding agent, a synthetic cobinding agent, different from the synthetic binding agent, and the said fluorescent bleaching agent. The method of the coating composition clarification, its application for manufacturing the coated paper and the obtained paper are described.
EFFECT: claimed coating composition provides an increased efficiency of paper bleaching.
25 cl, 4 dwg, 4 tbl, 4 ex
SUBSTANCE: invention relates to compositions for optic whitening of paper or cardboard. Composition includes at least two fluorescent whitening agents - derivatives of disulphonic bis-triazinylaminostilbenes, containing group -CO2M in aniline rings in para and/or ortho-position to aminogroup, where M is hydrogen, Li, Na, K, Ca, Mg, ammonium or ammonium, which is mono-, di-, tri- or tetra-substituted C1-C4-alkyl or C2-C4-hydroxyalkyl. Described is method of preparing said composition, its application, method of paper whitening and paper resulting from said process.
EFFECT: claimed composition possesses higher whitening ability in comparison with each of separate whitening agents and provides stable concentrated water compositions without addition of auxiliary solubility-improving substances.
25 cl, 1 dwg, 1 tbl, 4 ex
SUBSTANCE: invention relates to the field of inkjet printing. The sizing composition is proposed, which comprises the divalent metal salt, a binder and a new optical bleacher based on derivatives of diaminostilbene. Also the method of preparing the composition and the methods of its use are proposed.
EFFECT: invention provides obtaining of bleached high quality paper suitable for inkjet printing.
11 cl, 2 tbl, 8 ex
SUBSTANCE: invention relates to creation of sizing compositions used for inkjet printing. The liquid sizing composition is proposed, which comprises an optical bleacher based on diaminostilbene derivatives, a binder, a protective polymer and a bivalent metal salt. The methods of preparation and use of the composition for optical bleaching of carriers suitable for high quality inkjet printing are proposed.
EFFECT: invention provides obtaining of high-quality paper for inkjet printing.
13 cl, 6 tbl, 8 ex
FIELD: textiles, paper.
SUBSTANCE: composition comprises the water soluble divalent metal salt, a complexing agent having an affinity with the divalent metal, the sizing agent and the optical brightener in an amount of from 10 to 100 pounds per 100 pounds of the sizing agent.
EFFECT: improvement of optical properties of the paper product at lower amounts of optical brighteners, improved properties of dyes and printing, improved transmission properties in the papermaking machine.
18 cl, 11 tbl, 8 ex, 12 dwg
FIELD: textiles, paper.
SUBSTANCE: composition comprises at least one bis-triasinylaminostilbene compound containing alkylsulfoacid groups, as a fluorescent bleaching agent, a salt of a divalent cation, the carrier, and water. The invention also relates to a method of bleaching paper, which consists in the fact that the pulp sheet is contacted with the said composition, and to the paper obtained by this method.
EFFECT: method enables to obtain paper with improved whiteness, at that the obtained paper has improved printing performance.
25 cl, 3 dwg, 3 tbl, 3 ex
SUBSTANCE: composition contains at least one fluorescent bleaching agent from bis-triazinylaminostilbene compounds containing taurine groups in a triazine nucleus, having formulae (1), (2) and (3). The composition is used to bleach paper in a wet process, in a gluing press or by coating.
EFFECT: increased whiteness.
25 cl, 2 dwg, 2 tbl, 3 ex
SUBSTANCE: invention includes (a) at least one optical bleaching agent of formula (1) , wherein R1 denotes hydrogen or SO3M, R2 denotes hydrogen or SO3M, R3 denotes hydrogen or CH2CO2M, R4 denotes CH2CO2M, CH(CO2M)CH2CO2M or CH(CO2M)CH2CH2CO2M, where M denotes hydrogen, a cation of an alkali metal, ammonia, mono-methyl-di-C2-C3-hydroxyalkylammonium, dimethyl-mono-C2-C3- hydroxyalkylammonium, ammonium, which is mono-, di- or trisubstituted with a C2-C3 hydroxyalkyl radical, or a mixture of said compounds, (b) a magnesium salt or (c) binder, which is selected from a group consisting of natural starch, enzyme-modified starch, and chemically modified starch, wherein there are 0.1-15 parts of component (b) for one part of component (a). The invention also relates to a method of bleaching paper using said composition.
EFFECT: composition is a more efficient means of achieving high paper whiteness.
9 cl, 4 ex, 3 tbl
SUBSTANCE: invention relates to a compound of formula (1) where R1 denotes hydrogen or
EFFECT: compound is a more efficient paper bleaching agent.
8 cl, 4 tbl, 10 ex
FIELD: textile, paper.
SUBSTANCE: proposed composition for ink-jet printing on nonwoven textile material made of polyamide fibre contains 0.05-0.5 g/l of acid dye, 24-32 g/l carboxymethylcellulose, 70-100 g/l ammonium sulphate, 2-4 g/l of surface-active agent and the rest of water.
EFFECT: composition enables to increase the intensity of colour of carpets made of polyamide fibre, with a decrease in consumption of dye, while maintaining clarity of contours, depth of dyeing, and colour stability to rubbing, improvement of printing technology due to elimination of acrylic thickeners while increasing durability of printing heads due to use of water-soluble thickening agent - carboxymethylcellulose.
1 tbl, 17 ex
FIELD: printing industry.
SUBSTANCE: ink that contains water, water-insoluble colour and multiple water-soluble organic dissolvents is applied onto a carrier. Specified dissolvents contain a good solvent for the specified colour (A) and a poor solvent for the specified colour (B) with the ratio of A to B, equal from 10:5 to 7:9. The water-soluble organic dissolvent that has maximum value Ka, identified by Bristow method, among all water-soluble organic dissolvents in the ink, relates to poor dissolvents.
EFFECT: high extent of surface coating and high density of OD image even with small quantity of ink.
3 cl, 16 dwg, 11 tbl, 16 ex
SUBSTANCE: invention relates to ink systems for jet printing, containing a fixing composition with low corrosion activity. The invention discloses a fixing composition for jet printing, containing water or a mixture of water and at least one water-miscible organic solvent, and a polycationic fixing agent whose counterion is not a halogen, where the counterion is selected such that it reduces availability of the halogen in the fixing agent. The invention also discloses a method of applying an essentially noncorrosive ink composition and a jet system for providing ink with low corrosion activity.
EFFECT: invention reduces the negative effect of the fixing agent on components of the printing head while preserving all its useful properties.
10 cl, 2 dwg
SUBSTANCE: system for inkjet printing is described, including inks for inkjet printing, containing a mixture of free binders and a modified pigment, fixative and a porous carrier material. Free binder is a polymer from the group consisting of polyethyleneimines, poliguanida, imide and styrene maleic anhydride, quaternary ammonium compounds, styrene-polyacrylate, copolymer of styrene and maleic anhydride, polyurethane and their mixtures at a ratio of molecular weights of two polymers from 0.001 to 10. Method of printed images receipt is also described, including the provision of a porous carrier material, coating him with specified inks for inkjet printing and then - fixative.
EFFECT: proposed inks provide improved image stability to the formation of streaks under the influence of moisture without reducing the colour density of the image.
16 cl, 6 tbl, 4 ex
FIELD: mechanics; polygraphy.
SUBSTANCE: digital-control machine for printing on fabric incorporates a front and rear feed devices driven by the transfer shaft arranged inside the drive panel of the front and rear base parts so as to eliminate folds and banding formation resulting in printing defects. An elongated duct to withdraw printing ink is arranged at the base top to collect printing ink remainders to rule out smearing on ink on the fabric. At least one suck-in pan is provided inside the base to facilitate the ink remainders collection, while, to accelerate ink drying, a heater is mounted inside the base front part, coated with a rubber material.
EFFECT: high-efficiency printing on very thin fabrics.
10 cl, 7 dwg
SUBSTANCE: invention relates to active dyes designated for staining or printing of hydroxy- or nitrogen-containing organic substrates. Invention describes novel monoazo dyes comprising sulfatoethylsulfonyl groups of the formula (1) given in the invention description, mixtures of dyes and their using for staining or printing of hydroxy- or nitrogen-containing organic substrates and in dyes for jet printing. Proposed dyes provide the enhanced light resistance of painting and mixtures of dyes comprising the proposed dye possess the enhanced dyeing capacity as compared with individual dyes.
EFFECT: improved and valuable properties of dyes.
8 cl, 3 tbl, 45 ex
FIELD: ink-jet printing facilities and materials.
SUBSTANCE: invention relates to ink-jet printing on sheet-shaped substrates such as paper, films, and textiles. In particular, invention discloses a method for ink-jet printing on sheet-shaped substrates using aqueous ink including (i) at least one dye of formula (I): (I), wherein R1 and R2, each independently of the other, represents hydrogen atom or unsubstituted or substituted C1-C4-alkyl; R3 and R4, each independently of the other, represents unsubstituted or substituted C1-C4-alkyl; R5 and R6, each independently of the other, represents C1-C4-alkyl, C1-C4-alkoxy, halogen atom, hydroxyl, carboxyl, C2-C4-alkanoylamino, or sulfo group; X represents halogen atom, hydroxyl, C1-C4-alkoxy optionally substituted in alkyl residue, phenoxy optionally substituted in phenyl residue, C1-C4-alkylyhio optionally substituted in alkyl residue, phenylthio optionally substituted in phenyl ring, amino, C5-C7-cycloalkylamino optionally substituted in cycloalkyl residue, phenyl- or naphthylamino optionally substituted in aryl residue, N-C1-C4-alkyl-N-phenyl- or N-C1-C4-alkyl-N-naphthylamino optionally substituted in aryl residue, benzylamino optionally substituted in phenyl residue, morpholine, or pyperidin-1-yl; and n and m each is a number 0, 1, 2, or 3; and (ii) compound selected from polyethylene glycols with molecular mass from 150 to 400.
EFFECT: enabled producing light-resistant and moistureproof prints with elevated saturation of color.
12 cl, 1 tbl
SUBSTANCE: claimed invention relates to method of tainting during washing by means of special flue or violet bis-azo dyes, separately or in combination with photocatalyst. Other objects of claimed invention represent composition, containing at least one photocatalyst and at least one of special bis-azo dyes. Composition in accordance with claimed invention is especially suitable for tainting fabrics during washing. Other objects of claimed invention represent detergent composition, fabric-softening composition, containing said dyes or mixtures of said dyes and photocatalysts, and new blue or violet bis-azo dyes.
EFFECT: reduction of dye accumulation on fabric after several washing cycles.
15 cl, 3 tbl, 36 ex